In-ear electroencephalogram signal acquisition electrode

Abstract

The utility model provides an in-ear electroencephalogram signal collecting electrode which comprises a rubber plug of a hollow structure, and electrode plates are distributed on the surface of the rubber plug. One end of the rubber plug protrudes outwards to form an arc-shaped structure, and a fixing disc is fixed to the other end of the rubber plug. A supporting column is fixed in the fixing disc in a penetrating mode, and a data line is arranged in the supporting column. The data line is connected with the electrode plate; the rubber plug is of an arc-shaped cylindrical structure, and the diameter of the insertion end of the rubber plug is smaller than that of the other end of the rubber plug. An elastic ball is arranged between the supporting column and the rubber plug. According to the utility model, the EEG signal acquisition adopts an in-ear structure, and since the electrode slice in the ear canal is used for measuring the EEG signal, the ear canal is a relatively closed environment, so that the external noise and interference can be effectively reduced. When the rubber plug is inserted into the ear canal, the elastic ball abuts against the rubber plug so that the rubber plug can make full contact with the ear canal, and it is guaranteed that the electrode slice can make full contact with the ear canal to collect relevant information.

Description

TECHNICAL FIELD

[0001] The utility model relates to brain electricity signal collection equipment technical field, concretely is a kind of earplug brain electricity signal collection electrode. BACKGROUND

[0002] Electroencephalogram (EEG) is a technique for measuring and recording brain electrical activity, widely used in clinical diagnosis, neuroscience research and brain-computer interface fields. Traditional EEG devices usually collect signals through electrode patches installed on the scalp, but this method has some limitations, including complex electrode patch arrangement, poor comfort, limited signal quality and susceptibility to external interference.

[0003] In traditional scalp electrode patch EEG measurement, electrode patches need to be evenly arranged on the scalp surface and fixed by conductive paste or adhesive. This not only brings discomfort to users, but also increases the complexity and time cost of operation. In addition, scalp electrode patches are easily affected by external noise and motion artifacts, resulting in decreased signal quality. SUMMARY

[0004] To overcome the shortcomings of the prior art, the utility model provides an earplug brain electricity signal collection electrode to solve the existing problems.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] The utility model is realized through the following technical scheme: an earplug brain electricity signal collection electrode, comprising a hollow rubber plug, the surface of the rubber plug is distributed with electrode patches; one end of the rubber plug is protruded to form an arc structure, and the other end of the rubber plug is fixed with a fixed disc; a support column is fixedly penetrated in the fixed disc, and a data line is arranged in the support column; the data line is connected to the electrode patches; the rubber plug is an arc-shaped cylindrical structure, and the diameter of the insertion end is smaller than that of the other end; an elastic ball is arranged between the support column and the rubber plug.

[0007] Further, the elastic ball adopts an ellipsoidal structure, and the data line is embedded on the surface of the elastic ball and connected to the electrode patches.

[0008] Further, the electrode patches adopt an elliptical structure, and the electrode patches are evenly distributed on the outer surface of the rubber plug.

[0009] Further, the electrode patches are provided with sixteen, and the electrode patches adopt large and small elliptical structures; the electrode patches of small and large ellipses are cross-distributed on the outside of the rubber plug; the major axis of the large ellipse is larger than that of the small ellipse.

[0010] Further, the electrode pieces are eight, which adopt elliptical and rectangular structures, and the electrode pieces of the elliptical and rectangular structures are cross-distributed on the outside of the rubber plug.

[0011] Further, the electrode pieces are nine, which adopt elliptical and rectangular structures, and the electrode pieces of the elliptical and rectangular structures are cross-distributed on the outside of the rubber plug; the electrode pieces of the rectangular structures are of different lengths.

[0012] Further, the electrode pieces adopt arc-shaped long strip structures, and the electrode pieces are eight; the eight electrode pieces are evenly and transversely distributed on the surface of the rubber plug.

[0013] Further, the electrode pieces adopt horizontal long strip structures, and the electrode pieces of the horizontal long strip structures are four and evenly transversely distributed on the outside of the rubber plug.

[0014] Further, the electrode pieces adopt ring structures, and the electrode pieces are one or three and surround the outer surface of the rubber plug.

[0015] Compared with the prior art, the beneficial effects of the present application include:

[0016] The EEG signal collection of the present application adopts an ear-inserting structure, and the advantage of the electrode pieces in the ear canal in measuring the EEG signal is that the ear canal is a relatively closed environment, which can effectively reduce external noise and interference. Meanwhile, the skin in the ear canal is relatively smooth, the contact between the electrode pieces and the skin is more stable, and the electrode pieces are not easy to fall off due to movement. In addition, the wearing of the electrode pieces in the ear canal is more concealed and comfortable, and is suitable for long-time continuous monitoring. In the present application, the rubber plug is inserted into the ear canal, and the elastic ball abuts against the rubber plug, so that the rubber plug fully contacts the ear canal, and it is ensured that the electrode pieces can fully contact the ear canal to collect relevant information.

[0017] In addition, the present application also optimizes the number, position and size of the electrode pieces to improve the collection performance of the EEG signal. The electrode piece device of the present application includes a plurality of electrode pieces, which can be distributed in different numbers, positions and areas according to different embodiments, can collect EEG signals in real time during the wearing of the earphone by the user, and realize continuous monitoring and analysis of brain activities. BRIEF DESCRIPTION OF DRAWINGS

[0018] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts. Among them:

[0019] Figure 1 It is the overall structure schematic view of the embodiment one of the present application.

[0020] Figure 2 It is the structure schematic view of the embodiment case one of the utility model;

[0021] Figure 3 It is the structure schematic view of the embodiment case three of the utility model;

[0022] Figure 4 It is the structure schematic view of the embodiment case three of the utility model;

[0023] Figure 5 It is the structure schematic view of the embodiment case three of the utility model;

[0024] Figure 6 It is the structure schematic view of the embodiment case three of the utility model;

[0025] Figure 7 It is the structure schematic view of the embodiment case three of the utility model;

[0026] Figure 8 It is the structure schematic view of the embodiment case three of the utility model;

[0027] Figure 9 It is the structure schematic view of the embodiment case three of the utility model;

[0028] Figure 10 It is the structure schematic view of the embodiment case three of the utility model;

[0029] Figure 11 It is the structure schematic view of the embodiment case three of the utility model;

[0030] The figure mark explanation: 1, data line;2, support column;3, fixed disc;4, electrode piece;5, rubber plug;6, elastic ball. Specific implementation

[0031] It is easy to understand, according to the technical scheme of the utility model, the general technical personnel of the art can propose multiple structure modes and implementation modes of mutual replacement without changing the utility model essential spirit. Therefore, the following specific implementation and the drawing are only the exemplary description of the technical scheme of the utility model, and should not be regarded as the whole of the utility model or the limitation or restriction of the technical scheme of the utility model.

[0032] The brain electrical signal collection of the utility model adopts ear-in structure, because the advantage of ear canal electrode piece measuring EEG signal lies in that the ear canal is a relatively closed environment, which can effectively reduce external noise and interference. Meanwhile, the skin in the ear canal is relatively smooth, the contact between the electrode piece and the skin is more stable, and it is not easy to fall off due to movement. In addition, the wearing of the electrode piece in the ear canal is more concealed and comfortable, which is suitable for long-time continuous monitoring. In addition, the utility model also improves the collection performance of EEG signal by optimizing the number, position and size of the electrode piece. The electrode piece device of the utility model comprises a plurality of electrode pieces, which can be distributed in different numbers, positions and areas according to different embodiments. The utility model also provides an ear canal EEG measuring earphone device, which integrates a plurality of ear canal electrode pieces, can collect brain electrical signals in real time during the wearing of the earphone by the user, and realizes continuous monitoring and analysis of brain activity. The specific scheme is as follows:

[0033] An ear-in brain electrical signal collection electrode, as shown in Figure 1 and Figure 2 , comprising a hollow structure rubber plug 5, the surface of the rubber plug 5 is distributed with electrode piece 4;The one end of the rubber plug 5 is formed with arc structure, and the other end of the rubber plug 5 is fixed with fixed disc 3;The fixed disc 3 is fixed with support column 2, and the support column 2 is provided with data line 1;The data line 1 is connected with electrode piece 4;The rubber plug 5 is arc cylindrical structure, and the diameter of the insertion end of the rubber plug 5 is smaller than that of the other end;To adapt to the ear canal, and it is convenient to insert into the ear;The support column 2 and the rubber plug 5 are provided with elastic ball 6. Specifically, the elastic ball 6 adopts ellipsoidal structure, and the data line 1 is embedded on the surface of the elastic ball 6 and connected with the electrode piece 4. The elastic ball 6 with ellipsoidal structure has elasticity for supporting the rubber plug 5, when the rubber plug 5 is inserted into the ear canal, the elastic ball 6 abuts against the rubber plug 5, so that the rubber plug 5 fully contacts the ear canal, and the electrode piece 4 can fully contact the ear canal to collect relevant information.

[0034] Case one

[0035] As shown in Figure 1 , the electrode piece 4 adopts ellipsoidal structure, and the electrode piece 4 is provided with twenty-four electrode pieces which are uniformly distributed on the outer surface of the rubber plug 5.

[0036] When the user wears the rubber plug 5, the electrode pieces 4 can be evenly distributed on the inner wall of the ear canal; this uniform and dense distribution can provide high-resolution EEG (electroencephalogram) signals, capturing detailed spatial information of brain activity. Due to the large number of electrode pieces, more ear canal areas can be covered, improving the accuracy and sensitivity of the signal. The densely distributed electrode pieces can better capture the small electrical activity changes of the brain, suitable for applications that require high-precision EEG signals, such as epilepsy monitoring and advanced brain-computer interface technology. Although this design improves the accuracy of signal acquisition, it also increases the complexity of signal processing and the cost of device manufacturing, requiring a balance between performance and cost.

[0037] Case Two

[0038] As shown in Figure 9 , the electrode pieces 4 adopt an elliptical structure, and the electrode pieces 4 are provided with two evenly distributed on the outer surface of the rubber plug 5. The elliptical structure of the electrode pieces 4 in Case Two is larger than that of Case One. That is, the major axis and minor axis of the two elliptical structure electrode pieces 4 are longer, covering two large areas of the rubber plug 5;

[0039] This implementation case is very general for signal acquisition, suitable for detecting large-scale brain activity, but poor in capturing detailed signals. It is suitable for monitoring the overall trend of brain activity. The large elliptical electrode pieces cover a wide range and can provide stable signal input, suitable for basic EEG activity analysis and trend monitoring. This design is simple, but may not be sufficient in cases requiring high spatial resolution, and is suitable for simple clinical monitoring and home monitoring devices.

[0040] Case Three:

[0041] As shown in Figure 5 , the electrode pieces 4 adopt an elliptical structure, and the electrode pieces 4 are provided with twelve evenly distributed on the outer surface of the rubber plug 5. The size of the elliptical structure in Case Three is between that of Case One and Case Two.

[0042] This configuration can provide strong and extensive signals, but due to the small number of electrode pieces, some signal details may be missed. However, its large electrode piece area can ensure the stability and strength of the signal. The large elliptical electrode pieces are suitable for capturing EEG activity in a larger area of the ear canal, with a wide signal coverage range, suitable for routine monitoring and screening. The disadvantage of this design is the low spatial resolution, which may not be able to capture small EEG activity changes, and is not suitable for high-precision applications.

[0043] Case Four:

[0044] As shown in Figure 3As shown, there are sixteen electrode plates 4, and the electrode plates 4 adopt a large ellipse and a small ellipse structure; the small ellipse and the large ellipse electrode plates 4 are distributed alternately on the outside of the rubber stopper 5; the major axis of the large ellipse is larger than the major axis of the small ellipse.

[0045] This mixed-size electrode patch configuration captures different aspects of EEG signals. Larger electrodes capture a wider range of signals, while smaller electrodes capture more localized activity, enabling multi-level monitoring of brain activity. Alternating arrangements of large and small electrodes provide multi-scale monitoring of brain activity, facilitating the identification of activity and synchronicity in different brain regions. Non-uniformly distributed electrodes offer flexibility in covering important areas of brain activity, but require precise positioning and installation to ensure optimal signal acquisition.

[0046] Implementation Case 5:

[0047] like Figure 4 As shown, there are eight electrode plates 4. The electrode plates 4 adopt elliptical and rectangular structures and are distributed intermittently on the outside of the rubber stopper 5.

[0048] In this implementation, the electrode pads are unevenly distributed, with larger rectangular electrodes in the primary areas and smaller elliptical electrodes in secondary areas; this layout balances signal strength and resolution. The larger rectangular electrodes capture stronger signals, while the smaller elliptical electrodes supplement the capture of detailed signals, achieving comprehensive EEG signal acquisition. The rectangular electrodes provide a larger contact area, improving signal stability and intensity, making them suitable for initial acquisition of broad signals. The smaller elliptical electrodes capture detailed signals, supplementing areas not covered by the larger electrodes and providing a more comprehensive EEG activity map.

[0049] Implementation Case Six:

[0050] like Figure 6 As shown, there are nine electrode plates 4. The electrode plates 4 adopt elliptical and rectangular structures and are distributed alternately on the outside of the rubber stopper 5. The lengths of the rectangular electrode plates 4 are different.

[0051] This sparse electrode patch distribution may offer limited spatial resolution, but it can still capture general trends in brain activity. It is suitable for monitoring a broad range of brain activity without pursuing extremely high spatial resolution. The hybrid electrode patch shape design effectively covers major areas of brain electrical activity within the ear canal while maintaining signal quality. The sparsely distributed electrode patches help reduce interference between patches, improving signal independence and resolution.

[0052] Implementation Case Seven:

[0053] As Figure 7 shown, the electrode patches 4 adopt an arc-shaped strip structure, and there are eight electrode patches 4; the eight electrode patches 4 are evenly distributed horizontally and in parallel on the surface of the rubber plug 5.

[0054] The strip-shaped electrode patches can provide a good signal-to-noise ratio, and are suitable for detecting relatively smooth electroencephalogram signals. However, due to the small number of electrode patches and low spatial resolution, subtle signal changes may not be captured. The parallel distribution of electrode patches simplifies installation and maintenance, and is suitable for applications that require rapid deployment and long-term use. The large contact area of the strip-shaped electrode patches can provide stable signal acquisition, but may need to be compensated in signal processing to improve spatial resolution.

[0055] Case Eight:

[0056] As Figure 8 shown, the electrode patches 4 adopt a horizontal strip structure, and there are four electrode patches 4 in the horizontal strip structure, which are evenly distributed horizontally on the outside of the rubber plug 5.

[0057] This configuration can capture a wide range of brain activity, but has low spatial resolution and limited detail capture capability, making it suitable for preliminary electroencephalogram activity detection and screening. The large horizontal strip electrode patches are suitable for signal acquisition in the relatively smooth area of the ear canal, and can provide stable wide-area signals. This design is suitable for basic electroencephalogram activity monitoring, but is not suitable for applications that require high spatial resolution, such as fine neural feedback training.

[0058] Case Nine:

[0059] As Figure 10 shown, the electrode patches 4 adopt a ring structure, and there is one electrode patch 4, which surrounds the outer surface of the rubber plug 5.

[0060] In this case, the electrode patch 4 covers a single large area; the simple signal acquisition method captures very broad activity, but has insufficient detail signal capture capability, making it suitable for macroscopic monitoring of brain activity. The large rectangular electrode patch design is simple and easy to install and maintain, making it suitable for applications that require rapid deployment and simple operation. The limitation of this design is that it has low spatial resolution and cannot provide detailed electroencephalogram activity maps, but it is suitable for preliminary screening and routine monitoring.

[0061] Case Ten:

[0062] As Figure 11 shown, the electrode patches 4 adopt a ring structure, and there are three electrode patches 4, which surround the outer surface of the rubber plug 5.

[0063] In this implementation case, the electrode pieces are arranged in parallel within the ear canal during use; this configuration provides a larger coverage area, with each electrode piece covering a wider range and capturing a more comprehensive electroencephalogram signal. However, due to the relatively small number of electrode pieces, the spatial resolution is not as high as configurations with a larger number of electrode pieces, but it still provides stable signal acquisition and is suitable for monitoring relatively uniform brain activity. The design of the longitudinal strip-shaped electrode pieces helps to improve the stability of signal acquisition and reduce signal fluctuations caused by changes in ear canal shape. This design is suitable for applications that require long-term stable monitoring, such as sleep monitoring and continuous neurofeedback training.

[0064] Implementation case eleven:

[0065] The electrode pieces can also be irregular in shape and size and dispersed on the outer surface of the rubber plug; irregular electrode piece distribution may result in uneven signal quality and may miss some local activity, but may be useful for broad signal acquisition. Electrode pieces of different shapes and sizes can capture signals at different frequency bands, enabling multi-band electroencephalogram monitoring. Irregularly shaped and sized electrode pieces can adapt to the complex geometry of the ear canal, providing flexible installation methods. This design may require complex signal processing algorithms to correct uneven signal quality and ensure stable and reliable final signal output.

[0066] The collection electrode piece of the utility model not only is applicable to clinical diagnosis and neuroscientific research, but also can be widely applied to brain-computer interface, neurofeedback, sleep monitoring and emotion recognition and multiple fields. Through arranging electrode piece in ear canal, real-time monitoring and diagnosis of epilepsy, sleep disorder, cerebrovascular disease and the like can be realized. Compared with traditional scalp electrode piece, ear canal electrode piece has higher comfort and convenience, can improve patient compliance, and has significant advantages in long-term monitoring. The ear canal electrode piece can provide high-quality electroencephalogram signals, and has important significance for studying the basic mechanism of brain activity. Researchers can obtain more delicate electroencephalogram data through this method, and then deeply understand the working principle of the brain and the operation mechanism of the neural network. Through the ear canal electrode piece, the brain-computer interface system can provide more stable and efficient signal input. The ear canal electrode piece is concealed and comfortable, and is very suitable for applying BCI technology in daily life to realize convenient operation of brain-controlled equipment and brain-controlled computers.

[0067] Neural feedback is a method of helping users regulate brain waves by monitoring and feeding back brain activity in real time. With the use of in-ear electrode patches, higher precision neural feedback training can be achieved, helping users improve attention, emotional regulation, and stress management. In-ear electrode patches have unique advantages in sleep monitoring. Traditional sleep monitoring devices often require users to wear multiple electrode patches and sensors, which not only affect sleep comfort but also may affect sleep quality. With in-ear electrode patches, sleep stages and brain activity can be monitored in real time without affecting sleep, providing accurate sleep analysis and evaluation. By analyzing brain electrical signals, the emotional state of the user can be identified. In-ear electrode patches can provide stable signal input, helping to develop an efficient emotion recognition system, which can be applied in the fields of emotional regulation, mental health, and intelligent interaction.

[0068] The in-ear EEG earphone device of the utility model realizes the real-time collection of brain electrical signals by integrating in-ear electrode patches in the earphone. The earphone device can not only be used for listening to music and answering the phone, but also can simultaneously perform brain electrical monitoring, providing a multifunctional integrated smart wearable device.

[0069] The in-ear EEG earphone device of the utility model realizes the real-time collection of brain electrical signals by integrating in-ear electrode patches in the earphone. The earphone device can not only be used for listening to music and answering the phone, but also can simultaneously perform brain electrical monitoring, providing a multifunctional integrated smart wearable device.

[0070] The in-ear EEG earphone device of the utility model realizes the real-time collection of brain electrical signals by integrating in-ear electrode patches in the earphone. The earphone device can not only be used for listening to music and answering the phone, but also can simultaneously perform brain electrical monitoring, providing a multifunctional integrated smart wearable device.

[0071] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0072] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0073] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "several" is two or more than two, unless otherwise explicitly and specifically limited.

[0074] The technical scope of the utility model is not limited to the content in the above description, and those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical thought of the utility model, and these deformations and modifications should all be within the protection scope of the utility model.

Claims

1. An ear canal electrode for collecting electroencephalogram signals, characterized in that: a rubber plug (5) comprising a hollow structure, the surface of the rubber plug (5) being provided with electrode pads (4); one end of the rubber plug (5) is convex to form an arc-shaped structure, and the other end of the rubber plug (5) is fixed with a fixing disc (3); a support column (2) is fixedly penetrated in the fixing disc (3), and a data line (1) is arranged in the support column (2); the data line (1) is connected with the electrode pads (4); the rubber plug (5) is an arc-shaped cylindrical structure, and the diameter of the insertion end of the rubber plug (5) is smaller than that of the other end; an elastic ball (6) is arranged between the support column (2) and the rubber plug (5). The elastic ball (6) adopts an ellipsoidal structure, and the data line (1) is embedded on the surface of the elastic ball (6) and connected with the electrode pads (4).

2. The ear-canal EEG signal acquisition electrode according to claim 1, wherein: The electrode pads (4) adopt an elliptical structure, and the electrode pads (4) are evenly distributed on the outer surface of the rubber plug (5).

3. The ear-EEG electrode according to claim 1 or 2, characterized in that: The electrode pads (4) adopt a large-elliptical and small-elliptical structure, and the electrode pads (4) are cross-distributed on the outer surface of the rubber plug (5); the major axis of the large-elliptical electrode pads (4) is larger than that of the small-elliptical electrode pads (4).

4. The ear-canal EEG signal acquisition electrode according to claim 1 or 2, characterized in that: The electrode pads (4) adopt an elliptical and rectangular structure, and the electrode pads (4) are cross-distributed on the outer surface of the rubber plug (5).

5. The ear-EEG electrode according to claim 1 or 2, wherein: The electrode pads (4) adopt an elliptical and rectangular structure, and the electrode pads (4) are cross-distributed on the outer surface of the rubber plug (5); the lengths of the electrode pads (4) with the rectangular structure are different.

6. The ear-EEG electrode according to claim 1 or 2, wherein: The electrode pads (4) adopt an arc-shaped long strip structure, and the electrode pads (4) are evenly distributed on the surface of the rubber plug (5).

7. The ear-EEG electrode according to claim 1 or 2, wherein: The electrode pads (4) adopt a horizontal long strip structure, and the electrode pads (4) are evenly distributed on the outer surface of the rubber plug (5).

8. The ear-EEG electrode according to claim 1 or 2, wherein: The electrode pads (4) adopt a ring structure, and the electrode pads (4) are one or three, and the electrode pads (4) are arranged on the outer surface of the rubber plug (5).

9. The ear-EEG electrode according to claim 1 or 2, wherein: ​

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